Posterior to the ear, in the upper third of the curve connecting TE-17 and TE-20, posterior to the root of the auricle.
🧭 How to find it (practical)
Seated or in lateral decubitus, locate the point on the posterior auricular hairline, at the midpoint of the line connecting Chi Mai (TE-18) and Jiao Sun (TE-20) along the helix.
🔬 Anatomy
Posterior auricular muscle. Innervated by the lesser occipital nerve. Posterior auricular artery.
💉 Needling
Transverse (subcutaneous) insertion, 0.3–0.5 cun.
📜 Etymology
Lu (顱), fontanelle; Xi (息), sign. Note: there is a translation error here in Chinese. The point lies on the skull and is used to treat infantile convulsion.
